I have been getting that error in my error log since I updated my server with new map, re-configured plugins, etc. I am wondering what it is and how I can fix it. Here is my most recent crash report: http://pastebin.com/pyyUG3HT and here is my startup log: http://pastebin.com/1mDRUst7. It seems like it is only happening at night, so I assume that is because there are no players on. I am using beta build #2974